Darko mentioned Celtic several times. The goal is real sea salt that looks grey and wet (but Celtic has gotten really popular over time - San Francisco Sea Salt seems decent according to him)
https://darkovelcek.wordpress.com/2015/07/22/is-what-you-are-using-really-a-sea-salt/
https://darkovelcek.wordpress.com/?s=salt+
I watched this recently : https://www.bitchute.com/video/tybQVt5f0EJk/